I have a whole house water filter here, but it doesn't remove fluoride because the methods for doing that using cartridges are either expensive, don't work or are not vegan friendly. Instead, I use a water distiller to remove fluoride from my drinking water and then remineralise it and raise it's PH using bicarb. I posted about it here. ;)

non fluoridated toothpaste is available, yes - though be careful as at least one big brand was bought out by colgate a few years ago.